While the rest of us were holed up being cozy (er, freezing) all weekend, Lena Dunham was out and about at the Sundance Film Festival—with awesome hair. Her dual-braided look, a sort of French-braid-but-cooler...

Ruby Rose's hair is a near-magical thing. Not only has her signature edgy pixie-pompadour inspired other celebrities to try to emulate it (Nicole Richie, Jessie J) but she also brings a shocking level of...